Comedian Jimmy Fallon is well-loved for a few reasons: his utter inability to keep a straight face, his epic lip sync battles, and his knack for churning out viral videos. But grilling politicians is decidedly not among his strengths, something made abundantly clear when he lobbed softball questions at Republican presidential frontrunner Donald Trump on The Tonight Show in September. In an interview with Sirius XM's Bill Carter, Fallon challenged the notion that he should be hard on his guests: It's not my job.